tests: added Mana Maze test to reproduce stack overflow error (#11572, #11575)

Mage.Tests/src/test/java/org/mage/test/cards/single/inv/ManaMazeTest.java

@@ -0,0 +1,42 @@
+package org.mage.test.cards.single.inv;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ * @author JayDi85
+ */
+
+public class ManaMazeTest extends CardTestPlayerBase {
+
+    @Test
+    @Ignore // TODO: enable after deep copy fix
+    public void test_DeepCopyWithWatcherAndSelfReference() {
+        // stack overflow bug: https://github.com/magefree/mage/issues/11572
+        // card's watcher can have spell's ref to itself, so deep copy must be able to process it
+
+        // Players can't cast spells that share a color with the spell most recently cast this turn.
+        addCard(Zone.HAND, playerA, "Mana Maze", 1); // {1}{U}
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+        //
+        addCard(Zone.HAND, playerB, "Aven Reedstalker", 1); // {3}{U}
+        addCard(Zone.BATTLEFIELD, playerB, "Island", 4);
+
+        checkPlayableAbility("before", 1, PhaseStep.PRECOMBAT_MAIN, playerB, "Cast Aven Reedstalker", true);
+
+        // cast maze and restrict all other blue spells
+        castSpell(1, PhaseStep.POSTCOMBAT_MAIN, playerA, "Mana Maze");
+        checkPlayableAbility("after", 1, PhaseStep.END_TURN, playerB, "Cast Aven Reedstalker", false);
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        setStrictChooseMode(true);
+        execute();
+
+        assertPermanentCount(playerA, "Mana Maze", 1);
+        assertPermanentCount(playerB, "Aven Reedstalker", 0);
+    }
+}